76 THE MICROSCOPE. [May, 



Premiums. — For every new subscription to The Microscope 

 accompanied with $i we will give the choice of one of Sutton's 

 slides of American woods. The money must be sent direct and 

 not through any agent for you to secure the premium ; other- 

 wise the agent gets the premium. 



Of popular interest : Ironwood (transverse section) ; Syca- 

 more (tr. sec.) ; Spruce (tr. sec). 



Of scientific interest : White pine {Pinns strobus). long, 

 sec. ; Beech (jFavus sylvatica) . tr. sec. 



For every new subscription to both The Microscope (price 

 $i) and the Microscopical Journal (price $2) accompanied 

 by $3 we will give one of each of the 5 slides f?'ee. Or we 

 will sell either of the slides at 20 cents each, which is the very low 

 price put upon them by Mr. Sutton in his advertisement in the 

 Journal. All subscriptions should end with the volume in Dec. 



New Societies. — To encourage the formation of new micro- 

 scopical societies, we will send The Microscope free for one 

 year to ever charter member (not exceeding 15) who participates 

 in the organization. The secretary is to send us a report of each 

 meeting of the society for publication. A model for a constitution 

 and by-laws can be found in The MicroscoPE for May, 1S93. 



Buying Your First Microscope. — In making a beginning 

 in microscopical study you have to look forward to the future a 

 little and anticipate future needs. If after a few months' practice 

 you will want to increase your facilities and add to your appa- 

 ratus you must buy your first instrument with that contingency in 

 view. But, on the contrary, if you are not going to enlarge 

 your outfit, you can save money by ignoring the future. A begin- 

 ner may buy a stand in which the most powerful objectives will 

 fit perfectly, or for far less money he may buy one useful only for 

 the low-power objectives which come with it and which are 

 sufficient for the needs of a beginner. 



With this in view, we have addressed several dealers, asking 

 what they can furnish for such beginners as the young people of 

 the Agassiz Association, and have received some valuable replies. 

 Later, we hope that all the other dealers will report what each 

 can do for the beginner. 



Most of the firms allow a discount to the editor of this period- 

 ical, which we will divide with those young people who are 

 struggling to get a start in scientific work and who do not feel 

 able to pay the full retail price. 



Photomicrography. — I want to know something about this 

 subject and where to buy instruments at reasonable prices. I will 

 try it this summer. I lost all my slides and equipment lately by 

 fire in the High School. After the new building is up we shall 

 have an equipment of 10 stands and accessories. M. Ricker. 



